• Diab Vasc Dis Res · Jan 2018

    Near-infrared spectroscopy can detect differences in vascular responsiveness to a hyperglycaemic challenge in individuals with obesity compared to normal-weight individuals.

    • Rogério Nogueira Soares, Raylene A Reimer, Zaid Alenezi, Patricia K Doyle-Baker, and Juan Manuel Murias.
    • 1 Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada.
    • Diab Vasc Dis Res. 2018 Jan 1; 15 (1): 55-63.

    ObjectiveTo examine whether the near-infrared spectroscopy combined with vascular occlusion test technique could detect differences in vascular responsiveness during hyperglycaemia between normal-weight individuals and individuals with obesity.MethodsA total of 16 normal-weight individuals (body mass index, 21.3 ± 1.7 kg/m2) and 13 individuals with obesity (body mass index, 34.4 ± 2.0 kg/m2) were submitted to five vascular occlusion tests (Pre, 30, 60, 90 and 120 min after glucose challenge). Vascular responsiveness was determined by the Slope 2 (Slope 2 StO2) and the area under the curve (StO2AUC) of oxygen saturation derived from near-infrared spectroscopy-vascular occlusion test.ResultsThe Slope 2 StO2 increased from 1.07 ± 0.16%/s (Pre) to 1.53 ± 0.21%/s at 90 min ( p < 0.05) in the control group, while in obese it increased from 0.71 ± 0.09%/s (Pre) to 0.92 ± 0.14%/s at 60 min ( p < 0.05), and to 0.97 ± 0.10%/s ( p < 0.01) at 120 min after glucose ingestion. The StO2AUC decreased from 1729 ± 214% . sec (Pre) to 1259 ± 232% . sec at 60 min ( p < 0.05) and to 1034 ± 172% . sec at 90 min ( p < 0.05) in the normal-weight group, whereas it decreased at 90 min (637 ± 98% . sec; p < 0.05) and at 120 min (590 ± 93% . sec; p < 0.01) compared to 30 min (1232 ± 197% . sec) after glucose ingestion in individuals with obesity.ConclusionNear-infrared spectroscopy-vascular occlusion test technique was capable of detecting differences in vascular responsiveness during hyperglycaemia between normal-weight individuals and individuals with obesity.

      Pubmed     Free full text   Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        

    hide…

What will the 'Medical Journal of You' look like?

Start your free 21 day trial now.

We guarantee your privacy. Your email address will not be shared.